Guys, why do you assume my standards are too high for you to have a chance?

So I'm about to be a senior and my friends say that the reason nobody approaches me because they think my standards are high. & I guess that's true because I've noticed that people always tell me that they're interested when it's too late. For example, the person just graduated or went to another school. Also, when we played some game I admitted that if I had this choose someone to bang in the room, the guy seemed Very surprised I chose him. I'm actually really responsible and I lead a news broadcast team. I care about my grades as well. I don't know if that makes me seem like a "high standards" girl. I'm not shy at all and I think I'm kinda funny hmm. People say I have a big personality. However, I don't really talk to anyli guys outside of school because not many really talk to me first. Also, I get called cute a lot. Which is nice but not really because I have a babyface kinda and my voice is little higher pitched than usual when I get excited. People see me as innocent little Asian if that makes a difference. I know I'm not ugly because I guess I've had a fair share of people telling me they were interested but bad timing lol I don't think I have high standards, but it's just that I'm not desperate to date. How do I let them know, that there's a chance?

Updates:

Okay my standards are simple.

Just be taller than me. Which is easy because I'm pretty short. Make me laugh. & you don't have to look a specific way, if you look good you just do! The last guy I was in a serious relationship was kinda chunky and not as cute as he is now. The big factor is making me laugh/making fun of me.

To sum it up: is taller than me, makes me laugh, & average intelligence. & decent looks lol not expecting a model here.

Well because I don't really know him that well. I've only had precal with him and he pokes fun of me & I responded positively. BUT we are two different people! He hangs out with different people, like the athletes but he's friendly with anyone lol. & im Asian and short and he's black and tall lol. He actually joined my little news broadcast team and I was surprised he showed up to our little boot camp. So i don't really know if he's interested lol

So you don't know him that well but you're on friendly terms so that's good.Poking fun/teasing is a good sign of flirting so there's a good chance. Guys like short girls so you have nothing to worry about haha and as for race I'm black and last girlfriend was Asian (Chinese) so don't worry so much about race lol

It's in October LOL I'm worried if he wanted to ask another girl though :o I don't really know him enough to know if there are other girls or if he has a girlfriend too! If it helps he randomly followed me on phhhoto and I noticed another Asian girl he followed too.(plus he only follows 9 people and is pretty inactive on there) So maybe race isn't a problem